The Vilter Cover, Oil Pump and Filter Head – R717 & R22 is a specialized component designed for Vilter compressors using refrigerants R717 (ammonia) and R22. This cover protects the oil pump and filter head, essential for lubricating and maintaining the compressor’s internal components. By ensuring proper oil filtration and distribution, it helps maintain the compressor’s efficiency and longevity, especially in systems that use these specific refrigerants, commonly found in industrial refrigeration and HVAC applications.